New to growing!

hi everyone,
My partner and I have just invested into a ten pole plot, and we are hoping to grow many fantastic veg this year.  We have two children and want to give them some ground each to grow whatever they want ..... but does anyone have any ideas what kind of things they would be better to start off with??   :?

runner beans or climbing French beans tend to really impress kids as they grow so big.

They're a pretty safe and easy crop as long as they don't get frosted,

My girls want to grow:
giant pumpkin, melon, red carrots, purple sprouts, little gem lettuces, radish and peas...however they are just not growing fast enough except for the pumpkin which burst out of the seed and just GROWING! The first couple of leaves were enormous!